HEADPHONE DIAMETER / DRIVER - 40 MM CABLE LENGTH -1.2 M FREQUENCY RESPONSE - 12 - 22,000 HZ OUTPUT POWER - 50 mw IMPEDANCE - 32 ohms at 1 kHz SENSITIVITY -108 dB/mW MICROPHONE - YES NOISE ANTI-NOISE - YES VOLUME ADJUSTMENT - YES INTERFACE - 3.5 AUDIO JACK USAGE - PC HEADSET